Although research consistently shows that men can sustain intimate partner violence (IPV), few studies have investigated the possible consequences of sustaining IPV among men. The current study investigated the association between sustaining IPV and posttraumatic stress (PTS) symptoms among 3461 male university students at 60 sites around the world. Because this was a multisite study, analyses were also conducted to investigate whether the association between sustaining IPV and PTS existed at all sites, and whether certain site-level characteristics influenced the association. Results showed that sustaining IPV was a significant predictor of PTS symptoms at all sites. At the site level, lower levels of violent socialization and higher levels of hostility toward men increased the associations between sustaining IPV and PTS.